Electrical properties of phase formation in LiNbO3 films grown by radio-frequency magnetron sputtering method

被引：0
|
作者：
M. Sumets
A. Kostyuchenko
V. Ievlev
V. Dybov
机构：
[1] University of Texas Rio Grande Valley,
[2] Voronezh State University,undefined
来源：
Journal of Materials Science: Materials in Electronics | 2016年 / 27卷
关键词：
Thermal Annealing; LiNbO3; Li2O; Lithium Niobate; Impedance Spectroscopy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Thin polycrystalline films consisting of two phases: lithium niobate (LiNbO3) and lithium triniobates (LiNb3O8) were fabricated by the radio-frequency magnetron sputtering method. DC conductivity of as-grown films is affected by the hopping mechanism and influenced by the intergranular barrier 0.4 eV height associated with LiNb3O8 phase precipitated at the grain boundaries. Bulk grains (LiNbO3 phase) affect ac conductivity. Thermal annealing (TA) of the studied films leads to increase in the amount of LiNb3O8 phase due to diffusion of oxygen atoms towards the grain boundaries. As a result the bulk conduction component of the studied films after TA becomes a predominant factor.
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页码：7979 / 7986
页数：7
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